Chọn đáp án đúng: Dãy gồm các chất chứa liên kết cộng hóa trị không phân cực là? A. Cl2 ; O3 ; H2O.
B. K2O ; Cl2 ; O3.
C. O2 ; O3 ; H2O.
D. O3 ; O2 ; H2.

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

How many moles of oxygen react with 12 moles of aluminum